Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Expanding the genetic tool kit helps dissect a global stress response in the early-branching species Fusobacterium nucleatum

ABSTRACT: We elucidated the global regulatory network of sigma E in Fusobacterium nucleatum. For this, we developed new genetic tools for the anaerobic bacterium. This uncovered a conserved regulon of the sigma factor including a noncoding arm of the sRNA FoxI. In this process, FoxI serves as a negative regulator of sigma E to downregulate several outer membrane proteins as well as the putative galactose transporter mglBAC.

ORGANISM(S): Fusobacterium nucleatum subsp. nucleatum ATCC 23726

PROVIDER: GSE192339 | GEO | 2022/09/20

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Effect of Fusobacterium nucleatum on human HUVEC cells

Project description:Localization of Fusobacterium nucleatum in the placenta may be associated with pregnancy complications including preeclampsia (PE), but its specific pathobiology is unknown. Our aim was to analyze the effect of Fusobacterium nucleatum on HUVEC cells to further elucidate placental dysfunction in the context of Fusobacterium nucleatum infestation.

2024-06-08 | GSE269085 | GEO

Comparison of Fusobacterium Nucleatum stimulated and unstimulated neutrophils

Project description:Neutrophils are known to be stimulated by different periodontal bacteria to produce reactive oxygen species and cytokines. It is inportant to investigate the gene changes made by bacteria of importance, of which, for periodontal disease, fusobaterium nucleatum is one. we used microarrays to investigate gene experssion changes in peripheral blood neutrophils werwhich e stimulated with or with out Fusobacterium Nucleatum (10953). Neutrophils from periodonatlly healthy individuals (n=4) were isolated and stimulated for 3hrs with or without fusobaterium nucleatum (10953). RNA was then extracted from these and pooled before hybridization on Affymetrix microarrays

2010-07-20 | E-GEOD-20151 | biostudies-arrayexpress

Expanding the genetic toolkit helps dissect a global stress response in the early-branching species <i>Fusobacterium nucleatum</i>.

Project description:Fusobacterium nucleatum, long known as a common oral microbe, has recently garnered attention for its ability to colonize tissues and tumors elsewhere in the human body. Clinical and epidemiological research has now firmly established F. nucleatum as an oncomicrobe associated with several major cancer types. However, with the current research focus on host associations, little is known about gene regulation in F. nucleatum itself, including global stress-response pathways that typically ensure the survival of bacteria outside their primary niche. This is due to the phylogenetic distance of Fusobacteriota to most model bacteria, their limited genetic tractability, and paucity of known gene functions. Here, we characterize a global transcriptional stress-response network governed by the extracytoplasmic function sigma factor, σE. To this aim, we developed several genetic tools for this anaerobic bacterium, including four different fluorescent marker proteins, inducible gene expression, scarless gene deletion, and transcriptional and translational reporter systems. Using these tools, we identified a σE response partly reminiscent of phylogenetically distant Proteobacteria but induced by exposure to oxygen. Although F. nucleatum lacks canonical RNA chaperones, such as Hfq, we uncovered conservation of the noncoding arm of the σE response in form of the noncoding RNA FoxI. This regulatory small RNA acts as an mRNA repressor of several membrane proteins, thereby supporting the function of σE. In addition to the characterization of a global stress response in F. nucleatum, the genetic tools developed here will enable further discoveries and dissection of regulatory networks in this early-branching bacterium.

| S-EPMC9546586 | biostudies-literature

Expanding the genetic tool kit helps dissect a global stress response in the early-branching species Fusobacterium nucleatum

Project description:Expanding the genetic tool kit helps dissect a global stress response in the early-branching species Fusobacterium nucleatum

| PRJNA791213 | ENA

The effect of blood on Fusobacterium nucleatum

Project description:Fusobacterium nucleatum is a Gram-negative oral bacterial species associated with periodontal disease progression. As periodontal disease progresses, it is known F. nucleatum coaggregated with blood is frequently detected in the gingival crevice. However, it is largely unknown whether these interactions between F. nucleatum and blood induce a particular genetic response. We tested the cultures of F. nucleatum ATCC 25586 with or without blood in a semi-defined growth medium by microarray analysis and found 14 genes that were affected after only about 4hr. of adhered blood. Then, we selected 7 genes that changed significantly and tested these genes via real-time RT-PCR to confirm the validity of the microarray results. As a result, one amino sugar-binding protein on the membrane of F. nucleatum was especially expressed high via both microarray and real-time RT-PCR. Based upon these data, it appears that the protein on the F. nucleatum membrane binds and transfers the amino sugar only under blood conditions. This study aims to determine the effect of blood on the gene expression profiling of F. nucreatum. The study contains 2 separate experiments that both measure the cultures without or with blood. The samples with blood contain 9% and 33% blood.

2012-09-01 | E-GEOD-36410 | biostudies-arrayexpress

Fusobacterium nucleatum promotes colorectal cancer metastasis through miR-1322/CCL20 axis and M2 polarization

Project description:Fusobacterium nucleatum-treated LoVo cells reported an increased promoting CRC metastasis effect compared with PBS control. To understand the underlying mechanisms of Fusobacterium nucleatum-induced metastasis ability of CRC cells, we performed RNA-sequencing in LoVo cells s with or without Fusobacterium nucleatum treatment with three independent biological replicates.

2021-10-19 | GSE173549 | GEO

RNA-seq of PBT2-Zn treated Fusobacterium nucleatum cells in vitro

Project description:To investigate the effect of the Zn ionophore, PBT2, on the transcriptomic response of Fusobacterium nucleatum ATCC 25586, RNA was extracted from bacterial samples which had been treated as follows: Untreated (0.006% DMSO v/v), DMSO-Zn treated (0.006% DMSO v/v + 200 uM ZnSO4), or PBT2-Zn treated (0.125 ug/mL PBT2 + 200 uM ZnSO4) (DMSO was the vehicle control). RNA samples were collected at 0h, 0.5h, and 1h post challenge in biological triplicate and sequenced using Illumina HiSeq platform. We mapped sequences to the reference genome F. nucleatum subsp. nucleatum ATCC 25586 and performed DEseq2 analysis to determine differentially expressed genes across time and treatment.

2021-07-15 | E-MTAB-8681 | biostudies-arrayexpress

Fusobacterium nucleatum Reducing METTL3-mediated m6A Modification Contributes to Colorectal Cancer Aggressiveness [RIP-Seq]

Project description:To investigate the role of Fusobacterium nucleatum-mediated m6A modification, we performed m6A-sequencing to map the m6A modification in control or Fusobacterium nucleatum-treated HCT116 cells.

2022-02-07 | GSE150308 | GEO

Fusobacterium nucleatum

Project description:Fusobacterium nucleatum Genome sequencing

| PRJNA923398 | ENA

Fusobacterium nucleatum

Project description:Fusobacterium nucleatum Genome sequencing

| PRJNA932162 | ENA